Software Engineer Spring Boot

Karunakar Reddy Kalla

+1-571-***-**** Fairfax, VA ****************@*****.*** linkedin.com/in/karunakar45 Summary

Software Engineer with 3+ years of experience in Agile backend development, specializing in Java, Spring Boot, Spring Batch, RESTful microservices, and AWS (ECS, EC2, S3, API Gateway, Aurora, ALB, Route 53). Skilled in CI/CD, Docker, Kubernetes, monitoring tools (Datadog, Splunk), and unit/BDD testing (JUnit, Cucumber). Experienced as a subject matter expert, guiding teams, interacting with clients, and delivering on schedule. Experience

Heartland Community Network Jul 2024 – Jun 2025

Backend Developer Bloomington, Indiana

• Designed and developed Java Spring Boot and Spring Batch microservices handling 1,000+ daily requests with PostgreSQL optimization and Redis caching, reducing API latency by 30%.

• Implemented robust authentication and authorization using Spring Security, OAuth2, JWT, ensuring secure access, role-based permissions, and improving overall API reliability and security.

• Deployed services on AWS ECS/EC2, S3, Aurora, API Gateway, ALB, Route 53, ensuring high availability and scalability.

• Maintained CI/CD pipelines with Jenkins, Maven, Docker, Kubernetes and monitored system performance using Datadog. Cognizant Apr 2020 – Jun 2022

Software Engineer II Hyderabad, India

• Built RESTful microservices in Java, Spring Boot, Hibernate/JPA with MQ integration, efficiently improving overall system throughput by 35%.

• Enhanced database performance by tuning complex queries and indexes in MySQL and Cassandra, significantly reducing overall query response times by 25%.

• Implemented CI/CD pipelines with Jenkins, Maven, Gradle, deploying containerized applications on Kubernetes clusters.

• Performed unit and BDD testing using JUnit and Cucumber, reducing production defects and improving code reliability. Cognizant Sep 2019 – Mar 2020

Associate Software Engineer Hyderabad, India

• Developed backend APIs using Node.js, Express with JWT-based RBAC, efficiently handling high-traffic, concurrent applications securely and reliably.

• Integrated real-time synchronization using WebSockets, improving team collaboration efficiency by 35%.

• Contributed to CI/CD deployment and monitoring using Git, Jenkins, Docker, maintaining stable production releases.

• Developed unit and integration tests, improving code quality and reducing defects in production. Projects

Cross LLM Validation (VS Code Extension) – Java, Spring Boot, Node.js

• Developed a backend service to compare code suggestions from GPT-4, Gemini, AI21, and Cohere, handling requests efficiently and providing accurate validation results.

Crypto Portfolio Tracker – Spring Boot, PostgreSQL, Redis, Cassandra

• Built a backend system to track cryptocurrency investments, integrating real-time CoinGecko data, secure JWT authentication, and optimized database queries for performance.

MediScan AI – FastAPI, PostgreSQL, Docker

• Created an academic prototype for automated medical diagnosis, integrating FastAPI APIs, PostgreSQL patient records, and secure backend dashboards for users and doctors.

Technical Skills

Programming Languages: Java, Core Java, J2EE, JavaScript, Node.js Frameworks & Libraries: Spring Boot, Spring MVC, Spring Batch, Hibernate/JPA, Express.js, React Databases & Caching: PostgreSQL, MySQL, MongoDB, Redis, Cassandra, query optimization, indexing Cloud & DevOps: AWS (ECS, EC2, S3, API Gateway, Aurora, ALB, Route 53), Docker, Kubernetes, CI/CD, Git/Bitbucket Testing & Monitoring: JUnit, Cucumber, Postman, Swagger, Datadog, Splunk Tools & Methodologies: CSS, HTML, Agile/Scrum, Jira, Jenkins, Maven, Gradle Education

George Mason University Fairfax, VA

Master of Science in Computer Science

Vellore Institute of Technology (VIT) Vellore, India Bachelor of Technology in Computer Science

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